Exercise aid



FIG. 1 is a front and side perspective view of an exercise aid showing our new design;

FIG. 2 is a front view of an exercise aid shown in an alternate orientation with the legs in a raised position;

FIG. 3 is a front view of a single panel of the exercise aid of FIG. 1 without any legs and without being joined to any other panel;

FIG. 4 is a perspective view of an exercise aid of FIG. 2, shown in an open position; and,

FIG. 5 is a perspective view of an exercise aid of FIG. 2. 

CLAIM The ornamental design for an exercise aid, as shown and described. 